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Roman55 [17]
3 years ago
8

Solve the equation by factoring. 15=8x^2-14x

Mathematics
2 answers:
storchak [24]3 years ago
8 0
The solution is <span>the result of </span><span><span>2x−5</span>=0 </span>and <span><span><span>4x+3</span>=0.</span></span>
x=5/2, −3/4 (That's negative three fourths).
statuscvo [17]3 years ago
7 0
8x^2 - 14x - 15 = 0

8 * -15  =  -120    so we want 2 numbers which when added give us -14

-20 and 6  look good, so we can write:-

8x^2 - 20x  + 6x - 15 = 0

4x(2x - 5) + 3(2x - 5) = 0

2x-5 is common so we have:-

(4x + 3)(2x - 5) = 0

4x + 3 = 0  or 2x - 5 = 0

solution is -3/4 and 5/2
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Alternate interior angles are congruent.  Therefore, set the two angles equal to each other and solve for x. 

3x+4= 115
3x+4 -4 = 115 -4

3x =  111
x= 111/3---> 37. Therefore, x = 37. 

4 0
3 years ago
 If arc AB = 70°, how many degrees are in ∠ ADB?
tankabanditka [31]

If D is the center of the circle, ∠ADB = 70°, as that is where the arc gets its measure.

If D is on the circle and not on the arc, ∠ADB = 35°, half the measure of the arc's central angle.

If D is on arc AB, then ∠ADB = 145°, half the measure of the corresponding central angle.

If D is inside or outside the circle (and not one of the above), we need to know more about the measures of arcs intercepted by lines AD and BD.

5 0
3 years ago
The hospital is putting in a wheelchair ramp at one of its entrances. Only 6 feet of sidewalk can be covered by the ramp, and th
matrenka [14]

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3

Step-by-step explanation:

4 0
4 years ago
What is d+15-9/3+5 PLZZZZZ
zloy xaker [14]
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3 0
3 years ago
You are looking at two area rugs for your bedroom. One is a square with a side length of 6.3 feet. The other is a rectangle that
Helen [10]

Answer:

The square rug. The area of the rug is 39.69 ft² and is 0.33 ft² bigger than the rectangle rug.

Step-by-step explanation:

The find the area of a square, you multiply the length or the width (they all have the same length in a square) by the width (or the length), which would be the same exact number. So in that case—

The square has a side length of 6.3. To find the area of the square, we simply multiply 6.3 · 6.3 =39.69.

So, the area of the square is 30.69 ft²

————————————————————————————————————————

To find the area of a rectangle, you have to multiply the width by the length. (Or vise versa) This is showed by the following formula.

L·W=A

Where L=length, W=width, and A=area.

If the length is 8.2 and the width is 4.8, we can do the multiplicant equation that follows.

8.2·4.8= 39.36 ft².

Now that we have the area of both figures, we can compare them.

The square rug— 39.69

The rectangular rug— 39.36

Of we subtract the areas

39.69 and 39.36, we get the answer that the square rug is bigger by 0.33 ft².

6 0
3 years ago
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